CN103322960A - Method and device for detecting thickness of ring forming layer of rotary kiln - Google Patents
Method and device for detecting thickness of ring forming layer of rotary kiln Download PDFInfo
- Publication number
- CN103322960A CN103322960A CN2013102597559A CN201310259755A CN103322960A CN 103322960 A CN103322960 A CN 103322960A CN 2013102597559 A CN2013102597559 A CN 2013102597559A CN 201310259755 A CN201310259755 A CN 201310259755A CN 103322960 A CN103322960 A CN 103322960A
- Authority
- CN
- China
- Prior art keywords
- layer
- rotary kiln
- temperature
- thickness
- internal surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a method and device for detecting the thickness of a ring forming layer of a rotary kiln. A hole is formed in the wall of the rotary kiln in an outside-in mode and the hole does not penetrate through a fireproof material layer inside the kiln. The method comprises the steps of acquiring the flue-gas temperature in the rotary kiln and acquiring the surface temperature in the rotary kiln according to the flue-gas temperature and a first model when kiln coating occurs, measuring the bottom temperature of the hole, acquiring the reserving thickness of the fireproof material layer by subtracting the depth of the hole from the total thickness of the fireproof material layer, acquiring the heat conductivity coefficient of the ring forming layer, the heat conductivity coefficient of the fireproof material layer, and the heat flux of the bottom of the hole, and acquiring the thickness of the ring forming layer according to the parameters acquired and a second model. According to the method and device for detecting the thickness of the ring forming layer of the rotary kiln, when the kiln coating occurs, the thickness of the ring forming layer can be acquired in time and accurately by acquiring the flue-gas temperature in the rotary kiln in real time, measuring the bottom temperature of the hole in the wall of the rotary kiln in real time, and combining the acquired parameters such as the reserving thickness of the fireproof material layer and the heat conductivity coefficient of the ring forming layer as well as the preset second model.
Description
Technical field
The embodiment of the invention relates generally to the rotary kiln technical field, especially relates to a kind of ring formation of rotary kiln layer thickness detection method and device.
Background technology
Rotary kiln is a kind of high temperature kiln of continuous rotation, belongs to the nucleus equipment in acid pellet, the Direct Reducing Iron Process production line.In the rotary kiln course of work, because fire resistive material (furnace lining) rough surface of kiln inside surface, the powder and the low melting point that come off from the pelletizing surface under the hot conditions easily stick to refractory surface, along with rotary kiln continues revolution, a circle bonding material that just forms at the kiln inside surface is the ring formation thing.Ring formation (also can claim to tie kiln) problem is to affect the normal principal element of producing of rotary kiln, and ring formation seriously can cause gravity load increase in the kiln, and the furnace charge operation is not smooth, also can cause simultaneously fire resistive material to be peeled off by drawing crack, affects the serviceable life of furnace lining.Therefore, know that in time the thickness of ring formation thing is a very important problem in the kiln.
Rotary kiln is a rotation, high temperature, substantially airtight device, the artificial thickness that is difficult to directly find out from the outside ring formation thing on the furnace lining.In the prior art, can use infrared thermography to probe in the kiln from kiln hood, default check point is observed.But there is very large shortcoming in the method, the one, and need to shut down and could detect, real-time is poor, and efficient is low, and the 2nd, can be subjected to the impact of the temperature difference, distance, cause precision not high.As seen prior art can't well detect ring formation of rotary kiln thickness.
Summary of the invention
In view of this, the purpose of the embodiment of the invention provides a kind of ring formation of rotary kiln layer thickness detection method and device, with in time, detect the thickness of ring formation of rotary kiln layer exactly.
On the one hand, the embodiment of the invention provides a kind of ring formation of rotary kiln layer thickness detection method, offers ecto-entad on the described rotary kiln wall but does not run through the hole of the layer of anti-material the in the kiln, and described method comprises following ring formation layer thickness detecting step:
When the knot kiln occurring:
Obtain the flue-gas temperature in the rotary kiln, and according to described flue-gas temperature and the first default model, obtain the rotary kiln internal surface temperature;
Measure the bottom temperature in described hole;
Obtain the reservation thickness of the layer of anti-the material, described reservation thickness equals the layer of anti-material gross thickness and deducts hole depth;
Obtain ring formation layer coefficient of heat conductivity;
Obtain the layer of anti-material coefficient of heat conductivity;
Obtain the heat flow density at place, bottom, described hole;
According to described internal surface temperature, bottom temperature, reservation thickness, ring formation layer coefficient of heat conductivity, the layer of anti-material coefficient of heat conductivity, heat flow density and the second default model, obtain the ring formation layer thickness.
Preferably, described method also comprises following internal surface temperature and flue-gas temperature corresponding relation establishment step:
When the knot kiln not occurring, under different operating modes:
Measure the bottom temperature in described hole,
Obtain the reservation thickness of the described layer of anti-the material,
Obtain the described layer of anti-material coefficient of heat conductivity,
Obtain the heat flow density at place, bottom, described hole,
According to described bottom temperature, reservation thickness, the layer of anti-material coefficient of heat conductivity, heat flow density and the 3rd default model, obtain the rotary kiln internal surface temperature;
Obtain the flue-gas temperature in the rotary kiln corresponding with described internal surface temperature;
According to the described internal surface temperature that under different operating modes, obtains and corresponding flue-gas temperature, obtain be used to the first model that represents described internal surface temperature and described flue-gas temperature relation.
Preferably, described the first model comprises:
T
1＝βT
0+b
Wherein, T
1Be described rotary kiln internal surface temperature,
T
0Be the flue-gas temperature in the described rotary kiln,
β, b are constant.
Preferably, described the second model comprises:
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
1Be described ring formation layer thickness,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
1Be described ring formation layer coefficient of heat conductivity,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
Preferably, described the 3rd model comprises
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
On the other hand, the embodiment of the invention provides a kind of ring formation of rotary kiln layer thickness detection device, offers ecto-entad on the described rotary kiln wall but does not run through the hole of the layer of anti-material the in the kiln, and described device comprises:
The flue-gas temperature acquiring unit is used for obtaining the flue-gas temperature in the rotary kiln;
Internal surface temperature the first acquiring unit is used for obtaining the rotary kiln internal surface temperature according to described flue-gas temperature and the first default model;
The bottom temperature measurement unit is for the bottom temperature of measuring described hole;
Keep the thickness acquiring unit, be used for obtaining the reservation thickness of the layer of anti-the material, described reservation thickness equals the layer of anti-material gross thickness and deducts hole depth;
Ring formation layer coefficient of heat conductivity acquiring unit is used for obtaining ring formation layer coefficient of heat conductivity;
The layer of anti-material coefficient of heat conductivity acquiring unit is used for obtaining the layer of anti-material coefficient of heat conductivity;
The heat flow density acquiring unit is used for obtaining the heat flow density that bottom, described hole is located;
Ring formation layer thickness acquiring unit is used for when the knot kiln occurring, according to described internal surface temperature, bottom temperature, reservation thickness, ring formation layer coefficient of heat conductivity, the layer of anti-material coefficient of heat conductivity, heat flow density and the second default model, obtains the ring formation layer thickness.
Preferably, described device also comprises:
The internal surface temperature second acquisition unit is used for according to the described bottom temperature that gets access to, keeps thickness, the layer of anti-material coefficient of heat conductivity, heat flow density and the 3rd default model, obtains the rotary kiln internal surface temperature;
Temperature relation is set up the unit, be used for when not tying kiln, drive described the second internal surface temperature and described flue-gas temperature acquiring unit, obtain corresponding internal surface temperature and flue-gas temperature, and according to the corresponding internal surface temperature and the flue-gas temperature that under different operating modes, obtain, obtain be used to the first model that represents described internal surface temperature and described flue-gas temperature relation.
Preferably, described the first model comprises:
T
1＝βT
0+b
Wherein, T
1Be described rotary kiln internal surface temperature,
T
0Be the flue-gas temperature in the described rotary kiln,
β, b are constant.
Preferably, described the second model comprises:
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
1Be described ring formation layer thickness,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
1Be described ring formation layer coefficient of heat conductivity,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
Preferably, described the 3rd model comprises
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
The embodiment of the invention is when the knot kiln occurring, by the inner flue-gas temperature of Real-time Obtaining rotary kiln, measure the bottom temperature in hole on the kiln wall in real time, and in conjunction with parameter and the second default models such as the reservation thickness of the layer of anti-material that obtains, ring formation layer coefficient of heat conductivity, can get access in time, exactly the ring formation layer thickness, thereby be convenient in time maintenance or process (for example the mode by adopting thermal technology's operation a certain local location of kiln is carried out rapid heat cycle process), prolong the serviceable life of furnace lining, improve Business Economic Benefit.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the rotary kiln cross sectional representation;
Fig. 2 is the cross sectional representation of position with pores on the rotary kiln;
Fig. 3 is the process flow diagram of the explanation embodiment of the invention one method;
Fig. 4 is each parameter schematic diagram of bottom end vicinity in hole on the rotary kiln;
Fig. 5 is the process flow diagram of the explanation embodiment of the invention two methods;
Fig. 6 is the schematic diagram of the explanation embodiment of the invention three devices.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
For complete understanding the present invention, mentioned in the following detailed description numerous concrete details, but it should be appreciated by those skilled in the art that the present invention can need not these details and realizes.In other embodiments, be not described in detail known method, process, assembly and circuit, in order to avoid unnecessarily cause embodiment fuzzy.
Embodiment one
The present embodiment discloses a kind of ring formation of rotary kiln layer thickness detection method, offers ecto-entad on the described rotary kiln wall but does not run through the hole of the layer of anti-material the (refractory masses claims again furnace lining) in the kiln.Fig. 1 is the rotary kiln cross sectional representation, comprises respectively from outside to inside kiln shell, fire resistive material, when the knot kiln occurring, also is attached with the ring formation layer on the fire resistive material.It is inner that the layer of anti-the material is opened and be deep in described hole from kiln shell, but do not penetrate the layer of anti-the material, can be referring to shown in Figure 2.
Fig. 3 is the process flow diagram of the present embodiment method, and described method comprises following ring formation layer thickness detecting step:
When the knot kiln occurring:
S301, obtain the flue-gas temperature in the rotary kiln, and according to described flue-gas temperature and the first default model, obtain the rotary kiln internal surface temperature.
Basic thought of the present invention is by measuring or obtain some appointment parameters, again in conjunction with the second default model, thereby in time obtains the thickness of ring formation layer.Wherein rotary kiln internal surface temperature (claiming again inner wall temperature) is one of them very important parameter.But rotary kiln is as a housing, its internal surface temperature is difficult the measurement, although can estimate to obtain internal surface temperature by measuring some thermal technology's models of rotary kiln hull-skin temperature and substitution, but, one, heat conduction from the inside to the outside needs the long period, so there is time-delay in the method, namely real-time is bad; Its two, it is constant that the precondition of those thermal technology's models generally is operating mode, supposes that namely fuel in the kiln, material etc. are basicly stable, otherwise can be inapplicable or inaccurate, therefore this adaptation of methods is not strong.And the present invention is need to detect the ring formation layer thickness time, obtaining of internal surface temperature do not needed to measure hull-skin temperature, but obtain internal surface temperature by the flue-gas temperature in the rotary kiln and the first default model, consuming time without the heat conduction like this, therefore can guarantee real-time; The difference of flue-gas temperature has implied the variation that operating mode is arranged simultaneously, so the mode that the present invention obtains internal surface temperature by flue-gas temperature also has stronger adaptability and accuracy.
Can have multiplely for the obtain manner of flue-gas temperature in the rotary kiln, the present embodiment is not limited, and for example, can directly measure in real time by detecting element, can then calculate by Real-time Obtaining fuel flow rate, mass flow etc. yet.These modes that can use herein all do not deviate from spirit of the present invention and protection domain.For described internal surface temperature, inside surface wherein refers to the surface that contacts with flue gas in addition, referring to the T among Fig. 4
1, when not tying kiln, described inside surface is the surface of the layer of anti-the material, and when the knot kiln occurring, because the surface coverage of the layer of anti-the material is finished ring layer, described this moment, inside surface referred to the surface of ring formation layer.
The bottom temperature in S302, the described hole of measurement.The bottom is namely inner.So that this locates the attenuation of kiln wall, can detect quickly temperature variation at kiln body open interior.Can record by the detector unit in the hole.
S303, obtain the reservation thickness of the layer of anti-the material, described reservation thickness equals the layer of anti-material gross thickness and deducts hole depth.Can be referring to the δ among Fig. 2 or Fig. 4
2Shown in.
S304, obtain ring formation layer coefficient of heat conductivity.Can obtain by chemical examination.
S305, obtain the layer of anti-material coefficient of heat conductivity.Can obtain by chemical examination.
S306, obtain the heat flow density at bottom, described hole place.Can measure by detecting element.
Easily be understood that not have sequencing between each step of above-mentioned S301～S306.
S307, according to described internal surface temperature, bottom temperature, keep thickness, ring formation layer coefficient of heat conductivity, the layer of anti-material coefficient of heat conductivity, heat flow density and the second default model, obtaining the ring formation layer thickness (can be referring to the δ among Fig. 2 or Fig. 4
1Shown in).
Preferably, in the present embodiment or the present invention some other embodiment, described the first model comprises:
T
1＝βT
0+b
Wherein, T
1Be described rotary kiln internal surface temperature, unit K;
T
0Be the flue-gas temperature in the described rotary kiln, unit K;
β is temperature varying coefficient, and β, b are constant.
Preferably, in the present embodiment or the present invention some other embodiment, described the second model comprises:
Wherein, T
1Be described rotary kiln internal surface temperature, unit K;
T
3Be the bottom temperature in described hole, unit K;
δ
1Be described ring formation layer thickness, the m of unit;
δ
2Be the reservation thickness of the described layer of anti-material the, the m of unit;
λ
1Be described ring formation layer coefficient of heat conductivity, the W/ of unit (mK);
λ
2Be the described layer of anti-material coefficient of heat conductivity, the W/ of unit (mK);
Q is the heat flow density at place, bottom, described hole, the W/m of unit
2
Above each parameter can be referring to shown in Figure 4.
Need to prove in addition, the prerequisite of the present embodiment is to have judged to finish kiln, then just can detect the thickness that obtains the ring formation layer according to the step of the present embodiment.And whether finish kiln as for how to judge, and can be by various ways such as manual observation analysis or automatic measurements, the present embodiment does not need to relate to, and does not need restriction yet.
In addition, the present embodiment is as example, during practical operation take a temperature detection hole, can axially choose multi-turn along rotary kiln, each circle is established a plurality of temperature detection hole, detects with the ring formation layer thickness to each diverse location place, thereby realizes rotary kiln is more fully monitored.
Embodiment two
Fig. 5 is the process flow diagram of the embodiment of the invention two methods.The present embodiment is based on embodiment one, is further perfect to embodiment one, especially the building process of described the first model carried out replenishing and the refinement explanation.Simply, the thought of the present embodiment is under the different operating modes when not tying kiln, to obtain a large amount of internal surface temperatures and the corresponding data of flue-gas temperature, thereby simulate the relation of the two.For flue-gas temperature, can obtain or utilize inventory, fuel quantity etc. to calculate to obtain by direct measurement; For internal surface temperature, can obtain in conjunction with the 3rd default model by the bottom temperature of measuring described hole.Concrete, described method also comprises following internal surface temperature and flue-gas temperature corresponding relation establishment step:
When the knot kiln not occurring, under different operating modes:
The bottom temperature in S501, the described hole of measurement.
S502, obtain the reservation thickness of the described layer of anti-the material.
S503, obtain the described layer of anti-material coefficient of heat conductivity.
S504, obtain the heat flow density at bottom, described hole place.
S505, according to described bottom temperature, keep thickness, the layer of anti-material coefficient of heat conductivity, heat flow density and the 3rd default model, obtain the rotary kiln internal surface temperature.
S506, obtain the flue-gas temperature in the rotary kiln corresponding with described internal surface temperature.
In brief, above step is namely obtained internal surface temperature and the there flue-gas temperature at that time in somewhere on the inwall, thereby obtains one group of internal surface temperature and flue-gas temperature data.
The described internal surface temperature that S507, basis obtain under different operating modes and corresponding flue-gas temperature are obtained be used to the first model that represents described internal surface temperature and described flue-gas temperature relation.Although described the first model does not obtain when tying kiln, when the knot kiln occurring, this corresponding relation still exists.In addition, the first model that obtains by embodiment two can be linear function linear relationship such among the embodiment one, in other embodiments of the invention, according to the difference of data, the mode of curve be can also adopt, thereby more complicated repeatedly funtcional relationship or relational database obtained being.
Preferably, in the present embodiment or the present invention some other embodiment, described the 3rd model comprises
Wherein, T
1Be described rotary kiln internal surface temperature, unit K;
T
3Be the bottom temperature in described hole, unit K;
δ
2Be the reservation thickness of the described layer of anti-material the, the m of unit;
λ
2Be the described layer of anti-material coefficient of heat conductivity, the W/ of unit (mK);
Q is the heat flow density at place, bottom, described hole, the W/m of unit
2
Embodiment three
Fig. 6 is the schematic diagram of the embodiment of the invention three devices.The present embodiment is corresponding with said method embodiment, and a kind of ring formation of rotary kiln layer thickness detection device 600 is provided, and offers ecto-entad on the described rotary kiln wall but does not run through the hole of the layer of anti-material the in the kiln, and described device 600 comprises:
Flue-gas temperature acquiring unit 601 is used for obtaining the flue-gas temperature in the rotary kiln;
Internal surface temperature the first acquiring unit 602 is used for obtaining the rotary kiln internal surface temperature according to described flue-gas temperature and the first default model;
Bottom temperature measurement unit 603 is for the bottom temperature of measuring described hole;
Keep thickness acquiring unit 604, be used for obtaining the reservation thickness of the layer of anti-the material, described reservation thickness equals the layer of anti-material gross thickness and deducts hole depth;
Ring formation layer coefficient of heat conductivity acquiring unit 605 is used for obtaining ring formation layer coefficient of heat conductivity;
The layer of anti-material coefficient of heat conductivity acquiring unit 606 is used for obtaining the layer of anti-material coefficient of heat conductivity;
Heat flow density acquiring unit 607 is used for obtaining the heat flow density that bottom, described hole is located;
Ring formation layer thickness acquiring unit 608 is used for when the knot kiln occurring, according to described internal surface temperature, bottom temperature, reservation thickness, ring formation layer coefficient of heat conductivity, the layer of anti-material coefficient of heat conductivity, heat flow density and the second default model, obtains the ring formation layer thickness.
Preferably, described device also comprises:
The internal surface temperature second acquisition unit is used for according to the described bottom temperature that gets access to, keeps thickness, the layer of anti-material coefficient of heat conductivity, heat flow density and the 3rd default model, obtains the rotary kiln internal surface temperature;
Temperature relation is set up the unit, be used for when not tying kiln, drive described the second internal surface temperature and described flue-gas temperature acquiring unit, obtain corresponding internal surface temperature and flue-gas temperature, and according to the corresponding internal surface temperature and the flue-gas temperature that under different operating modes, obtain, obtain be used to the first model that represents described internal surface temperature and described flue-gas temperature relation.
Preferably, described the first model comprises:
T
1＝βT
0+b
Wherein, T
1Be described rotary kiln internal surface temperature,
T
0Be the flue-gas temperature in the described rotary kiln,
β, b are constant.
Preferably, described the second model comprises:
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
1Be described ring formation layer thickness,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
1Be described ring formation layer coefficient of heat conductivity,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
Preferably, described the 3rd model comprises
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part gets final product referring to the part explanation of embodiment of the method.Device embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select according to the actual needs wherein some or all of module to realize the purpose of the present embodiment scheme.Those of ordinary skills namely can understand and implement in the situation that do not pay creative work.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the said method embodiment is to come the relevant hardware of instruction to finish by program, described program can be stored in the computer read/write memory medium, here alleged storage medium, as: ROM, RAM, magnetic disc, CD etc.
Also need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are separated with another entity or operational zone, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.Used specific case herein and principle of the present invention and embodiment have been carried out lock stated, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (10)
1. a ring formation of rotary kiln layer thickness detection method is characterized in that, offers ecto-entad on the described rotary kiln wall but does not run through the hole of the layer of anti-material the in the kiln, and described method comprises following ring formation layer thickness detecting step:
When the knot kiln occurring:
Obtain the flue-gas temperature in the rotary kiln, and according to described flue-gas temperature and the first default model, obtain the rotary kiln internal surface temperature;
Measure the bottom temperature in described hole;
Obtain the reservation thickness of the layer of anti-the material, described reservation thickness equals the layer of anti-material gross thickness and deducts hole depth;
Obtain ring formation layer coefficient of heat conductivity;
Obtain the layer of anti-material coefficient of heat conductivity;
Obtain the heat flow density at place, bottom, described hole;
According to described internal surface temperature, bottom temperature, reservation thickness, ring formation layer coefficient of heat conductivity, the layer of anti-material coefficient of heat conductivity, heat flow density and the second default model, obtain the ring formation layer thickness.
2. method according to claim 1 is characterized in that, described method also comprises following internal surface temperature and flue-gas temperature corresponding relation establishment step:
When the knot kiln not occurring, under different operating modes:
Measure the bottom temperature in described hole,
Obtain the reservation thickness of the described layer of anti-the material,
Obtain the described layer of anti-material coefficient of heat conductivity,
Obtain the heat flow density at place, bottom, described hole,
According to described bottom temperature, reservation thickness, the layer of anti-material coefficient of heat conductivity, heat flow density and the 3rd default model, obtain the rotary kiln internal surface temperature;
Obtain the flue-gas temperature in the rotary kiln corresponding with described internal surface temperature;
According to the described internal surface temperature that under different operating modes, obtains and corresponding flue-gas temperature, obtain be used to the first model that represents described internal surface temperature and described flue-gas temperature relation.
3. method according to claim 1 and 2 is characterized in that, described the first model comprises:
T
1＝βT
0+b
Wherein, T
1Be described rotary kiln internal surface temperature,
T
0Be the flue-gas temperature in the described rotary kiln,
β, b are constant.
4. method according to claim 1 and 2 is characterized in that, described the second model comprises:
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
1Be described ring formation layer thickness,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
1Be described ring formation layer coefficient of heat conductivity,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
5. method according to claim 2 is characterized in that, described the 3rd model comprises
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
6. a ring formation of rotary kiln layer thickness detection device is characterized in that, offers ecto-entad on the described rotary kiln wall but does not run through the hole of the layer of anti-material the in the kiln, and described device comprises:
The flue-gas temperature acquiring unit is used for obtaining the flue-gas temperature in the rotary kiln;
Internal surface temperature the first acquiring unit is used for obtaining the rotary kiln internal surface temperature according to described flue-gas temperature and the first default model;
The bottom temperature measurement unit is for the bottom temperature of measuring described hole;
Keep the thickness acquiring unit, be used for obtaining the reservation thickness of the layer of anti-the material, described reservation thickness equals the layer of anti-material gross thickness and deducts hole depth;
Ring formation layer coefficient of heat conductivity acquiring unit is used for obtaining ring formation layer coefficient of heat conductivity;
The layer of anti-material coefficient of heat conductivity acquiring unit is used for obtaining the layer of anti-material coefficient of heat conductivity;
The heat flow density acquiring unit is used for obtaining the heat flow density that bottom, described hole is located;
Ring formation layer thickness acquiring unit is used for when the knot kiln occurring, according to described internal surface temperature, bottom temperature, reservation thickness, ring formation layer coefficient of heat conductivity, the layer of anti-material coefficient of heat conductivity, heat flow density and the second default model, obtains the ring formation layer thickness.
7. device according to claim 6 is characterized in that, described device also comprises:
The internal surface temperature second acquisition unit is used for according to the described bottom temperature that gets access to, keeps thickness, the layer of anti-material coefficient of heat conductivity, heat flow density and the 3rd default model, obtains the rotary kiln internal surface temperature;
Temperature relation is set up the unit, be used for when not tying kiln, drive described the second internal surface temperature and described flue-gas temperature acquiring unit, obtain corresponding internal surface temperature and flue-gas temperature, and according to the corresponding internal surface temperature and the flue-gas temperature that under different operating modes, obtain, obtain be used to the first model that represents described internal surface temperature and described flue-gas temperature relation.
8. according to claim 6 or 7 described devices, it is characterized in that, described the first model comprises:
T
1＝βT
0+b
Wherein, T
1Be described rotary kiln internal surface temperature,
T
0Be the flue-gas temperature in the described rotary kiln,
β, b are constant.
9. according to claim 6 or 7 described devices, it is characterized in that, described the second model comprises:
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
1Be described ring formation layer thickness,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
1Be described ring formation layer coefficient of heat conductivity,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
10. device according to claim 7 is characterized in that, described the 3rd model comprises
Wherein, T
1Be described rotary kiln internal surface temperature,
T
3Be the bottom temperature in described hole,
δ
2Be the reservation thickness of the described layer of anti-the material,
λ
2Be the described layer of anti-material coefficient of heat conductivity,
Q is the heat flow density at place, bottom, described hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310259755.9A CN103322960B (en) | 2013-06-26 | 2013-06-26 | A kind of ring formation of rotary kiln layer thickness detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310259755.9A CN103322960B (en) | 2013-06-26 | 2013-06-26 | A kind of ring formation of rotary kiln layer thickness detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103322960A true CN103322960A (en) | 2013-09-25 |
| CN103322960B CN103322960B (en) | 2016-05-18 |
Family
ID=49191865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310259755.9A Active CN103322960B (en) | 2013-06-26 | 2013-06-26 | A kind of ring formation of rotary kiln layer thickness detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103322960B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019676A (en) * | 2014-05-27 | 2014-09-03 | 黄淑梅 | Method for removing accretions in grate kiln |
| CN108663005A (en) * | 2018-04-09 | 2018-10-16 | 中国洛阳浮法玻璃集团有限责任公司 | A kind of detection method of Industrial Stoves pool wall corroding thickness |
| CN113155072A (en) * | 2021-02-09 | 2021-07-23 | 鞍钢股份有限公司 | On-line detection method for thickness of ring forming material of pellet rotary kiln |
| CN113866207A (en) * | 2021-09-17 | 2021-12-31 | 北京首钢股份有限公司 | Method and system for detecting erosion of refractory material of torpedo tank body |
| CN113868952A (en) * | 2021-09-28 | 2021-12-31 | 北京科技大学 | Online detection method for temperature field and ring thickness distribution in rotary kiln |
| CN114854922A (en) * | 2022-04-26 | 2022-08-05 | 酒泉钢铁(集团)有限责任公司 | Method for determining ring formation position of iron-containing material of rotary kiln and continuously cleaning iron-containing material by direct reduction |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR102021000672A2 (en) * | 2021-01-14 | 2022-07-26 | Saint-Gobain do Brasil Produtos Industriais e para Construção Ltda. | SYSTEM AND METHOD FOR MEASURING THE THICKNESS OF REFRACTORIES. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366838Y (en) * | 1999-02-04 | 2000-03-01 | 浙江大学工业自动化工程研究中心 | Device for automatically and continuously measuring temp. in calcining rotary kiln |
| CN101504319A (en) * | 2009-03-02 | 2009-08-12 | 莱芜钢铁股份有限公司 | Blast furnace online small-bore micro-damage furnace hearth side wall temperature detection method |
| CN102305614A (en) * | 2011-07-27 | 2012-01-04 | 中南大学 | Method for detecting and forecasting thickness of accretion of iron ore oxidized pellet rotary kiln |
| CN102928107A (en) * | 2012-10-22 | 2013-02-13 | 天津商业大学 | Device for measuring wall temperature of boiling reinforced surface tube of electric heating pool |
| CN103045855A (en) * | 2012-12-27 | 2013-04-17 | 中冶长天国际工程有限责任公司 | Method and system for predicting thickness of sintered ore bed |
-
2013
- 2013-06-26 CN CN201310259755.9A patent/CN103322960B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2366838Y (en) * | 1999-02-04 | 2000-03-01 | 浙江大学工业自动化工程研究中心 | Device for automatically and continuously measuring temp. in calcining rotary kiln |
| CN101504319A (en) * | 2009-03-02 | 2009-08-12 | 莱芜钢铁股份有限公司 | Blast furnace online small-bore micro-damage furnace hearth side wall temperature detection method |
| CN102305614A (en) * | 2011-07-27 | 2012-01-04 | 中南大学 | Method for detecting and forecasting thickness of accretion of iron ore oxidized pellet rotary kiln |
| CN102928107A (en) * | 2012-10-22 | 2013-02-13 | 天津商业大学 | Device for measuring wall temperature of boiling reinforced surface tube of electric heating pool |
| CN103045855A (en) * | 2012-12-27 | 2013-04-17 | 中冶长天国际工程有限责任公司 | Method and system for predicting thickness of sintered ore bed |
Non-Patent Citations (1)
| Title |
|---|
| 张卫军等: "高炉板壁结合式炉衬温度场分析", 《中国冶金》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019676A (en) * | 2014-05-27 | 2014-09-03 | 黄淑梅 | Method for removing accretions in grate kiln |
| CN104019676B (en) * | 2014-05-27 | 2016-06-08 | 黄淑梅 | A kind of method removing ring formation dross in chain grate machine��rotary kiln |
| CN108663005A (en) * | 2018-04-09 | 2018-10-16 | 中国洛阳浮法玻璃集团有限责任公司 | A kind of detection method of Industrial Stoves pool wall corroding thickness |
| CN113155072A (en) * | 2021-02-09 | 2021-07-23 | 鞍钢股份有限公司 | On-line detection method for thickness of ring forming material of pellet rotary kiln |
| CN113866207A (en) * | 2021-09-17 | 2021-12-31 | 北京首钢股份有限公司 | Method and system for detecting erosion of refractory material of torpedo tank body |
| CN113868952A (en) * | 2021-09-28 | 2021-12-31 | 北京科技大学 | Online detection method for temperature field and ring thickness distribution in rotary kiln |
| CN114854922A (en) * | 2022-04-26 | 2022-08-05 | 酒泉钢铁(集团)有限责任公司 | Method for determining ring formation position of iron-containing material of rotary kiln and continuously cleaning iron-containing material by direct reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103322960B (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103322960B (en) | A kind of ring formation of rotary kiln layer thickness detection method and device | |
| CN104237305B (en) | A kind of rock mass testing device for measuring thermal conductivity and test system | |
| Hu et al. | An experimental investigation and statistical characterization of intermittent flame ejecting behavior of enclosure fires with an opening | |
| CN103308019A (en) | Peeled rotary kiln furnace lining thickness detecting method and device | |
| CN106868242A (en) | It is a kind of that the intelligent monitor system of hearth erosion situation is monitored based on furnace shell thermometric | |
| CN106909705A (en) | A kind of blast-melted quality prediction method and its system | |
| CN103866061A (en) | Method for monitoring erosion deviation of blast furnace hearth | |
| CN101319256A (en) | Intelligent Monitoring Method of Blast Furnace Stave | |
| CN102338797B (en) | High-pressure soil freezing temperature test device | |
| CN108844651B (en) | Ball bin temperature early warning method based on neural network | |
| D’Avignon et al. | Assessment of T-history method variants to obtain enthalpy–temperature curves for phase change materials with significant subcooling | |
| CN104198524B (en) | A kind of mensuration system and method for Equivalent Thermal Conductivities | |
| Landfahrer et al. | Numerical and experimental investigation of scale formation on steel tubes in a real-size reheating furnace | |
| CN103307872B (en) | Kiln flue gas temperature detection method and device | |
| JP6206368B2 (en) | Blast furnace state estimation apparatus and blast furnace state estimation method | |
| CN111027257A (en) | Method for predicting safe storage time of pulverized coal covered coal pile by using neural network | |
| JP5583614B2 (en) | Blast furnace operation state control system, operation control device, blast furnace operation state control method and program | |
| JP5387066B2 (en) | Blast furnace gas flow distribution estimation method, blast furnace gas flow distribution estimation device, and blast furnace gas flow distribution estimation program | |
| Liu et al. | Experimental profiles of lateral mixing of feed particles in a three‐dimensional fluidized bed | |
| CN104568187B (en) | A kind of kiln temperature detection method and device | |
| Zhang et al. | The study of heat-mass transfer characteristics and multi-objective optimization on electric arc furnace | |
| Steinmaurer et al. | Development of sensors for measuring the enthalpy of PCM storage systems | |
| de Rubeis et al. | Thermal optimization of 3D-printed block–Hot Box and heat flow meter experimental analysis | |
| CN105004756A (en) | Burner flame intensity determination method and apparatus thereof | |
| Tan et al. | Measurement of Acid Placement with Temperature Profiles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |